| Derry to Opole | 1,089.87 mi (1,753.97 km) |
| Derry to Orzesze | 1,137.96 mi (1,831.37 km) |
| Derry to Osowa | 1,025.23 mi (1,649.95 km) |
| Derry to Ostroda | 1,096.38 mi (1,764.46 km) |
| Derry to Ostroleka | 1,172.20 mi (1,886.47 km) |
| Derry to Ostrow Mazowiecka | 1,191.22 mi (1,917.09 km) |
| Derry to Ostrow Wielkopolski | 1,057.51 mi (1,701.90 km) |
| Derry to Ostrowiec Swietokrzyski | 1,219.22 mi (1,962.15 km) |
| Derry to Ostrzeszow | 1,068.39 mi (1,719.41 km) |
| Derry to Oswiecim | 1,160.08 mi (1,866.96 km) |
| Derry to Otwock | 1,182.31 mi (1,902.75 km) |
| Derry to Ozarow Mazowiecki | 1,161.37 mi (1,869.04 km) |
| Derry to Ozimek | 1,100.72 mi (1,771.44 km) |
| Derry to Ozorkow | 1,107.46 mi (1,782.28 km) |
| Derry to Pabianice | 1,119.58 mi (1,801.79 km) |
